Aresearcher would like to estimate p, the proportion of u. s. adults who support recognizing civil unions between gay or lesbian couples. if the researcher would like to be 95% sure that the obtained sample proportion would be within 1.5% of p (the proportion in the entire population of u. s. adults), what sample size should be used?
(a) 17,778(b) 4,445(c) 1,112(d) 67(e) 45

(b) 4,445

Step-by-step explanation:

If the researcher would like to be 95% sure that the obtained sample proportion would be within 1.5% of p (the proportion in the entire population of U.S. adults), what sample size should be used?

Given a=0.05, |Z(0.025)|=1.96 (check standard normal table)

So n=(Z/E)^2*p*(1-p)

=(1.96/0.015)^2*0.5*0.5

=4268.444

Take n=4269

(b) 4,445

300pi

step-by-step explanation:

i believe your answer is 99.7% of 7-year-old children are between 46.6 inches and 49.5 inches tall.